Issues concerning Haste<SP?

So I have been checking up on SimCraft, and after going by what I have seen off Icy-Veins and here on MMO Champ, I have completely reforged my character for Mastery>Haste>Crit. However, the issue I am running into is that I did a sim this morning, and the result has Haste at 3.37, while SP is below at 3.29. Is haste really warranted to weigh so high? Could a lock expert give me some assistance? Should I be setting up options better before simulating?

Haste are related to additional ticks. This means that there are haste plataus. Meaning right befor a platau (= 1 more tick on dots) the value of haste is alot. Meanwhile right after a platau additional haste dose not effect your performance so much, hence why it at that point is valued low.
For more details on how much haste each platau is, please refer to some guide.